The new brodix 11X will be miles past the old nascar stuff.
Al at HRD does nice work, .. so this is in no way saying anything
bad about him.
More important, . . what is the engine combo, engine size, .. bore stroke, etc.
you need to match the proper cylinder head to the application, ..
Brodix castings hold up very well under extreme use, ..
but for most blower applications I use Dart heads, .. and for a small
block I'd use the Dart 220 with spread port exhaust.
Curtis